B&B Electronics RS-232 Digital Relay I/O 232DRIO - Manual (Page 10)

8 232DRIO-0308 Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Table 2.3 – 232DRIO To DTE Connections
232DRIO
Pin #
Signal DTE DB-25
Connection DTE DB-9
Connection
2 Receive Data (RD) 3 2
3 Transmit Data (TD) 2 3
5 Signal Ground (SG) 7 5
9 Ring Indicator 22 9
Table 2.4 – 232DRIO To DCE Connections
232DRIO
Pin #
Signal DCE DB-25
Connection DCE DB-9
Connection
2 Receive Data (RD) 2 3
3 Transmit Data (TD) 3 2
5 Signal Ground (SG) 7 5
9 Ring Indicator 22 9
Power Supply Connections
The power requirement is 12VDC at 100mA. Power to the
232DRIO can be wired through the RS-232 serial port pin #9 (power
pin) or by an external power supply through the blue terminal blocks.
Serial ports can not provide enough power to supply the 232DRIO’s
100 milliamp requirement.
Chapter 3 - Commands